Carbureter.



No. 772,791. PATENTED'OOT. 18, 1904. s. L. DOW.

GARBURETER.

APPLICATION FILED [A121, 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

.1 .1... Z E I 21.53.1112: 2.13.1115.

- WITNESSES;

PATENTED OOT. is, 1904.

E. L. DOW. CARBURETER. APPLICATION FILED 11411.21, 190 2.-

2 SHEETSSHEBT 2.

N0 MODEL.

11v VENTOR.

WITNESSES.-

. m M. m/ pk. J. 5 W. .7/ K j 4 U ITED STATES Patented October 18, 1904.

PATENT OFFICE. I

EDGAR L. DOW, OF OAKLAND, CALIFORNIA, ASSIGNOR TO STEPHEN POOLE SANDERS, OF GUPERTINO, CALIFORNIA.

, CARBURETER.

SPECIFICATION forming part of Letters Patent No. 772,791, dated October 18, 1904.

Application filed March 21, 1902.

T LZZ whom it may concern:

Be it known that I, EDGAR L. Dow, a sub ject of the King of Great Britain, residing at and whose post-oflice address is 447 Vernon street, Oakland, in the county of Alameda and State of California, have invented certain new and usefulImprovements in Carbureters; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in gas-generating machines, and more particularly to hydrocarbon gas generating ma chines.

The objects of this invention are to simplify the construction and render the machine positive in its action and to so volatilize the hydrocarbon that the percentage of vapor shall be uniform with each charge of the gasometer.

The invention consists of an air-pump and a hydrocarbon-tank thereunder, into which a measuring-cup is raised, dumped, and lowered by the rise and fall of the air-pump. The measured quantity of hydrocarbon so dumped flows back into a generator situated in the hydrocarbon-tank, into which air from the airpump is circulated, volatilizing the carbon therein, forming a saturated gas which is led off to a gas-holder for distribution.

The invention will be described in detail in connection with the accompanying draw: ings, in which similar letters of reference refer to similar parts throughout the several views.

Figure 1 is a vertical cross-section of the air-pump, the hydrocarbon-tank, and the generator therein, with the intercom'municating connections therewith. Fig. 2 is a diagrammatic side elevation illustrating the complete apparatus. Fig. 3 isa plan from above of the generator situated within the hydrocarbontank. Fig. 4: is a detail view in side elevation of the measuring-bucket.

In .construction the invention consists of an air-pump of the ram type,wherein an inverted the water seal A ram through the pipe A,-causing the cylin- Serial No. 99,358 (No model.)

closed cylinder A, centrally supported on the head of the ram A, is raised and lowered in Water is admitted to the der A to rise, creating a vacuum which lifts the valve A admitting air until the ram has reached the maximum rise. ically shuts 01f the water by closing the valve A. The action that closes the valve A opens the yalve A which permits the cylinder A, accelerated by the weight A, to descend. This closes the valve A expressing the air within the cylinder under pressure through the-outlet A The water seal A consists of an annular channel formed around a cylindrical chamber closed at the top. This form of seal is preferable to the ordinary seal, consisting of a full tank of water, into which the air-holder descends.

The hydrocarbon-tank is located under the air-pump, preferably underground for safety, economy of space, and evenness of temperature. This tank consists of the main reservoir B, having a false bottom B through which the well B extends to the bottom proper. The tank is filled through the inlet B". In the top of the tank. in line with the well is the dome B. The rod B resiliently attached to the roof of the cylinder A, extends downward through the casing B and the stuffing-box B ,"suspending the bucket 13 within the well 13. This bucket consists of a cylindrical receptacle pivoted in a bail B near its longitudinal center, having the tipping-cam B extending over its mouth.v The perforations B are placed in the back of the bucket at the desired height to limit the carrying capacity of the bucket to the predetermined charge. As the air-holder A rises to the maximum the bucket rises into the dome B, the tipping-cam B engages the trip B tilting the contents of the bucket into the hopper B. The pipe B connects this hopper with the generator C, (the hydrocarbon and the air being admitted through the same opening,) which consists of an attenuated chamber situated between the false bottom and the bottom proper of the hydrocarbon-tank. The generator is partitioned This automat longitudinally by walls C at equal distances, alternately extending from each end across to near the opposite end in such a manner that the attenuated chamber of the generator is divided into a tortuous continuous channel C The charge of hydrocarbon passing from the hopper enters the generator, spreading out in an attenuated sheet. Simultaneously with the dumping of the charge the air-holder begins to descend under the pressure of the weight A, forcing the air through the pipe A into the generator, causing the volatilization of the hydrocarbon therein as it passes over and through the same on its way to the outlet B leading to the gas-holder E. To prevent the air from backing into the pipe B, the check-valve B is interposed therein. Thus when the blast enters the generator the cheek-valve seats, shutting ofl. egress through this channel. A similar check-valve A is interposed in the pipe A to prevent the suction incident to the filling of the pump acting from the generator instead of through the valve A The Waste Water from the ram is led through the pipe A* into the space around the generator, escaping through the wastepipe C This circulation of Water around the generator prevents freezing during volatilization.

The valves A and A are operated by the tilting lever D, pivoted to outer wall of the channel A Each end of the lever is linked to the handles of the respective valves. The lever is actuated by the rod D, attached to the side of the cylinder A and passing through a ring in the end of the lever D, the adjustable lugs D on the rod engaging the lever and elevating or depressing same as the pump approaches the maximum of its rise and fall, simultaneously opening and closing each valve respectively. The lever D is formed of a section of pipe partially filled with mercury or some suitable shifting weight to cause it to act quickly to avoid pauses in the operation of the pump and to more readily unseat the valves A and A After the gas is generated it is led from the generator to the gas-holder E through the pipe B, the flow being controlled by means of the valve E, operated in a manner similar to that described in connection with A and A except that only one valve is operated. The gas-holder E may be of any suitable type, preferably of a construction in which the holder is adapted to rise and fall in a body of Water.

Attention is called to the fact that a predetermined quantity of air is saturated with a predetermined quantity of hydrocarbon, producing adefinite percentage of vapor without reference to the demand upon the gasometerthat is to say, that the pump only operates when the gasometer is nearly emptied; that the hydrocarbon is drawn from the main body only at the time of volatilization and is combined with the air in a generator separate from the main body of the hydrocarbon, in this manner protecting the main body from evaporation; that the water used to operate the ram is used to insulate the gen erator before going to waste an economy.

Having thus described this invention, what is claimed, and desired to be secured by Letters Patent, is-

1. In a carbureter, an aerometer operated by a hydraulic pump, a hydrocarbon-reservoir having a false bottom, a generator situated between said false bottom and bottom proper; an inclosed well extending through said false bottom; a dome on said reservoir coincident with said well; a bucket adapted to be raised and lowered in the said reservoir by the rise and fall of the aerometer; means whereby the contents of said bucket, and the air from the aerometer are introduced into the said generator; and means whereby the waste water from the hydraulic pump is circulated around said generator; substantially as described.

2. In a carbureter, the combination with an aerometer, of means whereby said aerometer is raised and lowered, a hydrocarbon-reservoir, a generator within said hydrocarbonreservoir, a well extending through said generator for holding hydrocarbon, and means connected to the aerometer for supplying hydrocarbon to the generator from the well.

3. In a carbureter, an aerometer, means whereby said aerometer is raised and lowered at stated intervals, a hydrocarbon-reservoir, a generator, a well within said generator, a bucket connected to said aerometer whereby a predetermined quantity of hydrocarbon is raised from the well, a dome on said hydrocarbon-reservoir, and means on said dome adapted to tilt the bucket and dump the hydrocarbon after it has been raised.

4. In a carbureter, the combination with an aerometer, hydraulic means for raising and lowering said aerometer, of a generator, a hydrocarbon-reservoir, means controlled by the aerometer whereby a predetermined quantity of air and a predetermined quantity of hydrocarbon are supplied to the generator, and means whereby the water for raising said aerometer is utilized to heat the generator.

5. In a carbureter an aerometer operated by ahydraulicram; a hydrocarbon-tank having a generator connected with the aerometer; means whereby the rise of the aerometer introduces a predetermined quantity of hydrocarbon into the said generator; and means whereby the waste water from the aerometer is caused to circulate around the generator; substantially as described.

6. In a carbureter, the combination with an aerometer, means for raising and lowering said aerometer, means mounted on the aerometer for rendering said raising and lowering means inoperative alternately, a rod suspended from the top of said aerometer and provided with a bucket for supplying hydrocarbon to the generator, and means for controlling the supply of air tothe generator.

7. In a carbureter the combination with an aerometer, of a hydraulic pump for raising said aerometer, Valves connected to the supply and exhaust of said pump, means carried by the aerometer for opening and closing said valves, a hydrocarbon-tank, a rod resiliently suspended in said hydrocarbon-tank from the top of said aerometer and provided with abucket adapted to raise a predetermined quantity of hydrocarbon from said tank,

means for receiving the hydrocarbon from the bucket and conveying it to the generator, and means whereby a predetermined quantity of air is admitted into the generator. 1

8. In a carbureter having a generator and a hydrocarbon-reservoir, the combination with a reservoir, of a hydraulic ram adapted to raise said aerometer automatically at stated intervals, means for rendering said raising means inoperative andallowing said aerometer to fall, and means suspended from said aerometer adapted to raise hydrocarbon from the reservoir and dump it into the generator at the limit of upward movement of the aer- I ometer.

9. In a curbureter, the combination with an aerometer, of means for raising and lowering said aerometer, a generator, awater-re ceptacle surrounding said generator, a hydrocarbon-tank having a well formed as a continuation thereof, a resiliently suspended bucket adapted to carry hydrocarbon, and a hopper communicating with the generator, 

